表面预处理是制备高性能 Kevlar 纤维的关键技术. 应用一种新颖的"非刻蚀无钯活化"预处理工艺和以二甲氨基硼烷作 为还原剂的化学镀铜体系制备了镀铜 Kevlar 纤维. 采用 X 射线光电子能谱仪(X-ray photoelectron spectroscopy, XPS)、X 射线衍射仪(X-ray diffraction, XRD)和高分辨扫描电子显微镜(scanning electron microscope, SEM)分析不同处理阶段 Kevlar 纤维的化学组成、晶态结构和表面形貌, 并对镀铜 Kevlar 纤维的结合强度、电学性能、力学性能和热稳定性能进行测试. 结果表明, 通过此新工艺制备的铜层致密平整, 且与基体结合力强, 并具有较好的导电性、力学性能和热稳定性能.

Surface pretreatment is a key process in preparation of high-performance metallization Kevlar fiber. Electroless Cu plating was conducted on a Kevlar fiber using a new pretreatment method called non-etching and Pd-free activation with dimethyl amine-borane as the reducing agent. Chemical compositions, crystal structure and surface morphology of the coatings were investigated using X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD) and scanning electron microscope (SEM). Adhesion strength, mechanical properties and thermal stability of the coatings were evaluated. The results showed that the obtained Cu deposit was continuous and compact, and possessed high adhesion with the Kevlar fiber. The Cu plated Kevlar fiber maintained excellent mechanical properties and thermal stability.